Alright, let's work through the question together with a detailed step-by-step approach to find out how many additional computers have been installed in the server room and the total number of computers present.
### Step-by-Step Solution:
1. Initial Information:
- The initial number of computers in the server room was 9.
2. Daily Installation Rate:
- Each day, 5 more computers were installed.
3. Total Installation Period:
- The installation lasted for 4 days, from Monday to Thursday.
4. Calculate Additional Computers Installed:
- To find out how many computers were installed over 4 days, we multiply the number of computers installed daily by the number of days.
- Calculation for Additional Computers:
[tex]\[
\text{Additional Computers} = \text{computers per day} \times \text{number of days}
\][/tex]
[tex]\[
\text{Additional Computers} = 5 \times 4 = 20
\][/tex]
5. Calculate Total Number of Computers:
- To find out the total number of computers in the server room now, add the initial number of computers to the additional computers installed.
- Calculation for Total Computers:
[tex]\[
\text{Total Computers} = \text{initial computers} + \text{additional computers}
\][/tex]
[tex]\[
\text{Total Computers} = 9 + 20 = 29
\][/tex]
### Conclusion:
- The number of additional computers installed over the 4 days is 20.
- The total number of computers in the server room now is 29.
Therefore, the results are:
- Additional computers installed: 20
- Total computers in the server room now: 29
